Answer:
because the gross is the total amount of money they get without the subtraction of taxes that they have to pay
Step-by-step explanation:
Answer:
0
Step-by-step explanation:
0
Answer:
Step-by-step explanation:
Given, :
x P(x)
0 0.900
1 0.09
2 0.007
3 0.003
The expected variance ; Var(X) = x²*p(x) - E(X)²
The expected mean, E(X) = x*p(x)
E(X) = (0*0.9) + (1*0.09) + (2*0.007) + (2*0.003) = 0.113
Var(X) = [(0^2*0.9) + (1^2*0.09) + (2^2*0.007) + (3^2*0.003)] - 0.113^2
Var(X) = 0.145 - 0.012769
Var(X) = 0.132
Step-by-step explanation:
3x²-12=0
3(x²-4)=0
3(x²-2²)=0
3(x+2)(x-2)=0
hope it helps.
Answer:
Population of monkeys after 2 years = 3200
Step-by-step explanation:
Total number of monkeys at the start = 2975
Increase ratio of monkey population one year = ![8:7](https://tex.z-dn.net/?f=8%3A7)
∴ New population of monkeys after 1 year= ![Total\ population \times Increase\ ratio = 2975\times \frac{8}{7} =3400](https://tex.z-dn.net/?f=Total%5C%20population%20%5Ctimes%20Increase%5C%20ratio%20%3D%202975%5Ctimes%20%5Cfrac%7B8%7D%7B7%7D%20%3D3400)
Decrease ratio the next year = ![16:17](https://tex.z-dn.net/?f=16%3A17)
∴ Population of monkeys after 2 years= ![New\ population \times Decrease\ ratio = 3400\times \frac{16}{17} =3200](https://tex.z-dn.net/?f=New%5C%20population%20%5Ctimes%20Decrease%5C%20ratio%20%3D%203400%5Ctimes%20%5Cfrac%7B16%7D%7B17%7D%20%3D3200)